31368740940 has 192 divisors, whose sum is σ = 101039339520. Its totient is φ = 8074391040.

The previous prime is 31368740917. The next prime is 31368740951. The reversal of 31368740940 is 4904786313.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1844275 + ... + 1861205.

It is an arithmetic number, because the mean of its divisors is an integer number (526246560).

Almost surely, 2^31368740940 is an apocalyptic number.

31368740940 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31368740940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50519669760).

31368740940 is an abundant number, since it is smaller than the sum of its proper divisors (69670598580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31368740940 is a wasteful number, since it uses less digits than its factorization.

31368740940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17069 (or 17061 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 31368740940 in words is "thirty-one billion, three hundred sixty-eight million, seven hundred forty thousand, nine hundred forty".